edjiejwi
29.09.2020 •
Mathematics
Eighty percent of students surveyed said they feel more focused after exercising. Nine hundred fifty students were surveyed.
Students Who Feel More Focused after Exercise
20%
20%
20%
20%
20%
How many students said they feel more focused after exercising?
380
570
760
930
Solved
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Ответ:
13
Step-by-step explanation:
This is a Pythagorean Theorem question. Line PR's length is 12, and line PQ's length is 5.
12^{2} + 5^{2} is 144 + 25 = 169
= $13$